Nammo UK MHT-1N is a 1 N-class hydrazine monopropellant spacecraft thruster with 1.38 N maximum thrust and 228 s specific impulse. Nammo documents its first flight on SSTL Telesat LEO-1, TRL 9 performance and ongoing ESA qualification; its catalyst-management and rapid thermal-conditioning design support long-life variable-duty operation. Lifecycle is active.